B. Calculate total amount of combined cost incurred in 2017, 2016 and 2015 for raw material, direct labor and manufacturing overhead. (show formulas and work)

2014 has ending inventory amount.

2017:

Raw Materials Inventory=377

work in process inventory=0

Finished goods inventory=525

Total inventory=902

Cost of goods sold=4,831

2016:

Raw Materials Inventory=391

Work in Process inventory=0

Finished Goods Inventory= 549

Total Inventory=940

Cost of goods sold=5,181

2015:

Raw Materials Inventory=427

Work in Process Inventory=0

Finished Goods Inventory=566

Total Inventory=993

Cost of Goods sold=5,300

2014:

Raw Material Inventory=399

Work in process inventory=0

Finished Goods Inventory=617

Total Inventory= 1,016